Hermann kunze



(No Model.) 2 Sheets-Sheet 1,

H. KUNZE & s. BROWN. SPRING BOLT OR LOCK AND KEY.

No. 567,143. Patented'Sept. 8, 1.896

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(N o Model.)

H. KUNZE & S. BROWN. SPRING BOLT OR- LOOK AND KEY.

Patented Sept. 8, 1896.

" HTEE 6 M 520 NITED STATES I-IERMANN KUNZE, OF HILL END, AND SUMMERS BROIVN, OF MOSMAN, NEW

SOUTH WALES.

SPRING BOLT 'OR LOCK AND KEY.

SPECIFICATION forming part of Letters Patent No. 567,143, dated September 8, 1896.

Application fil d November 23, 1895. $erial No- 56 9,935- (No model.)

To all whom it may concern:

Be it known that we, IIERMANN KUNZE, of Hill End, and SUMMERS BROWN, of Mosman, near Sydney, Colony of New South WVales, subjects of the Queen of Great Britain, have invented a new or Improved Spring Bolt or Lock and a Key Therefor, of which the following is a specification.

This invention has for its object the providing of a spring-bolt usable also as a lock and latch and certain improvements in connection with keys therefor.

Referring to the annexed sheet of explanatory drawings, Figure 1 is a perspective View of the bolt; Fig. 2, a similar view of the under bar; Fig. 3, a similar view of bolt shot upon the under bar and securing together a pair of leather straps or thongs; Fig. 4, aperspective view of the invention applied as a latch-gear for leggings; Fig. 5, a longitudinal section illustrating the modification adapted as a lock Fig. 6, a bottom plan of base-plates; Fig. 7, a top plan of bolt; Fig. 8, a bottom view of same; Fig. 9, a similar view showing plan of key-bit in position for shooting back the bolt; Fig. 10, a transverse section on line a b; Fig. 11, a side elevation of key and plan thereof.

The same figures of reference indicate corresponding parts in all the drawings.

The bolt 1 has its end 2 formed as a spring with a finger-piece 3 for manipulation. A slot 4, terminating in an enlarged aperture 5, permits the bolt 1 to slide freely within the grooves 6 and 7, formed in the studs 8 and 9.

' 10 is the under bar, and 11 an aperture in the spring 2, which engages with the point of one of the studs 8 or 9 on the under bar 10.

12 and 13 are two straps or thongs joined together by the spring-bolt 1.

14 are holes in the upper strap.

It will readily be seen that the invention is capable of application in a variety of ways wherein the locking together of parts is required, and though we have illustrated only three different applications it is to be understood that we do not restrict ourselves to these alone.

In Figs. 1 and 3 the bolt and under bar with the projections are illustrated as taking the place of a buckle, the under bar being secured to the lower strap by a permanent fastening and the upper strap provided with a series of holes, which engage with the studs 8 and 9. The bolt is placed in position by inserting the end of one of the studs 8 or 9 through the aperture 5 and sliding the former within the grooves 6' or 7 till the corresponding stud falls within the aperture 5 and its groove engages with the slot l. The bolt is pushed far enough to allow the hole 11 in the spring 2 to snap-over the end of its stud, and so firmly lock the former in position. To withdraw it, the finger-piece 3 is pulled up to free the spring 2 from its stud, and the bolt is then drawn back and removed.

In Fig. 4: the under bar 10 is secured into one of the meeting edges of a legging or such like, and in the corresponding meeting edge a spring-bolt 1 is provided. The latching is effected by entering the studs 15, 16, and 17 into their corresponding grooves, as described above, and sliding the bolt 1 far enough to allow the aperture in the spring 2 to snap over the end 15, and so look all in position. Disengagement is effected by lifting up the end of the spring 2 and drawing the bolt bodily up.

Figs. 5 to 11 illustrate a further modification of the invention as applied to the looking of a door or such like, in which the bolt is either manipulated by the finger-piece 3 from one side or by a key from the otherside. In this modification the under bar 10 is divided into two parts, one piece, 10, being secured to the door, and the other, 10 to the frame thereof. is the door, 19 the frame thereof, and 10 and 10 under bars provided with studs 8 and 9 and box 20. These studs are preferably made with a cap or plate 21, secured in place by screws 22. These cap-plates extend transversely of the studs 8 and 9 above and across the slots in the bolt, so as to hold said bolt in place while permitting it to slide back and forth. The tongue 2 in this instance is perforated, as in Figs. 1 to 4, and may engage the projection 22, which may be the screw before described. In operating the bolt with the key 23 to shoot it back, it is necessary in the first instance to disengage the spring 2 from the head of the screw This is accomplished by constructing the key 23 with Referring to these figures, 18

two bits 24 and 25, the former of which during the early part of its rotary movement is engaged in lifting the spring from the stud, and this action is completed before the other bit 25 engages with the stop-piece 26 to force back the bolt. 27 is the second stop-piece against which the bit 25 acts to shoot the bolt forward. 28 is an aperture out in the staplebar 10 and bolt 1 to permit of the insertion and withdrawal of the lifting-bit 24 of the key. 29 are clearance-slots provided in the bolt 1 to allow the necessary travel.

What we claim as our invention, and desire to secure by Letters Patent, is-- 1. In combination, the under bar carrying projecting portions, and the slotted bolt adapted to receive said projecting portions, said bolt having a catch-plate formed integral therewith and bent back upon itself and engaging IIERMANN KUNZE. SUMMERS BROWN. \Vitnesses:

C. G. IIEPBURN, XV. J. DAVIS. 

